OLS Day 1

I didn't actually visit any of the talks, but instead read some of the papers in the written proceedings, hacking lots of code and talking to various people.

I've also managed to convince GregKH that support for async URB submission from userspace needs CONFIG_BROKEN. libusb doesn't use it anyway, and the number of users of this interface is limited. Unfortunately one of my customers is one of the users, so I might be forced to implement a cleaner interface for the same purpose.